package main

import (
	"io"
	"net"
	"net/http"
	"os"
	"os/exec"
	"path/filepath"
	"strings"
	"testing"
	"time"
)

func TestPlaceholderNeverOpensActivationDatabase(t *testing.T) {
	dir := t.TempDir()
	binary := filepath.Join(dir, "home-placeholder")
	build := exec.Command("go", "build", "-o", binary, ".")
	if out, err := build.CombinedOutput(); err != nil {
		t.Fatalf("build: %v: %s", err, out)
	}
	l, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		t.Fatal(err)
	}
	addr := l.Addr().String()
	l.Close()
	// The parent is deliberately missing: any database open must fail boot.
	database := filepath.Join(dir, "absent", "must-not-exist.db")
	cmd := exec.Command(binary, "-addr", addr, "-db", database)
	cmd.Env = []string{"PATH=" + os.Getenv("PATH")}
	if err := cmd.Start(); err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() { _ = cmd.Process.Kill(); _ = cmd.Wait() })
	client := &http.Client{Timeout: time.Second, CheckRedirect: func(*http.Request, []*http.Request) error { return http.ErrUseLastResponse }}
	origin := "http://" + addr
	deadline := time.Now().Add(10 * time.Second)
	for {
		response, err := client.Get(origin + "/healthz")
		if err == nil {
			response.Body.Close()
			if response.StatusCode == 200 {
				break
			}
		}
		if time.Now().After(deadline) {
			t.Fatal("placeholder did not start without secrets and with an unusable database path")
		}
		time.Sleep(25 * time.Millisecond)
	}
	for path, status := range map[string]int{"/": 200, "/static/brand/icon.svg": 200, "/signin": 404, "/authorize": 404, "/static/brand/": 404} {
		response, err := client.Get(origin + path)
		if err != nil {
			t.Fatal(err)
		}
		body, err := io.ReadAll(response.Body)
		response.Body.Close()
		if err != nil {
			t.Fatal(err)
		}
		if response.StatusCode != status {
			t.Errorf("%s: status %d, want %d", path, response.StatusCode, status)
		}
		if len(response.Cookies()) != 0 {
			t.Errorf("%s set cookies", path)
		}
		if path == "/" && !strings.Contains(string(body), `href="/static/brand/icon.svg"`) {
			t.Error("missing favicon")
		}
	}
	if _, err := os.Stat(filepath.Dir(database)); !os.IsNotExist(err) {
		t.Fatalf("database parent created or unreadable: %v", err)
	}
}